Mexico City Area Code: 55 — How to Call CDMX from the US (2026)
Mexico City's area code is 55. How to call CDMX hotels, businesses, and cell phones from the US and Canada — with dialing examples, time zone info, and neighborhood breakdown.
Ciudad de México (CDMX) · Mexico
Area Code
55
From the US / Canada
+52 55 XXXX XXXX
CST / CDT
Time Zone
8 digits
Local number
22M pop.
Metro area
Mexico City's Area Code Is 55
The area code for Mexico City (CDMX) is 55. It's one of only two 2-digit area codes in Mexico (the other being Guadalajara's 33 and Monterrey's 81), reflecting Mexico City's status as the country's largest metropolitan area.
Mexico City phone numbers have 8 local digits after the 55 area code — totaling 10 digits domestically, the same as any other Mexican city. From the US, you dial +52 55 followed by the 8-digit local number.
⚠️ Key difference from other Mexican cities
Mexico City numbers have an 8-digit local number (not 7 like most other cities). The full format from the US is +52 55 XXXX XXXX — that's 2 (area code) + 8 (local) = 10 digits total. Don't confuse it with 7-digit formats from cities like Cancún or Puerto Vallarta.
How to Call Mexico City from the US
📱 From a US/Canada smartphone
+52 55 XXXX XXXX
Hold "0" to get "+" · Then 52 + 55 + 8 digits
☎️ From a US/Canada landline
011 52 55 XXXX XXXX
"011" is the US/Canada international exit code
Step by step from a smartphone
- Open your phone's dialer.
- Type +52 (hold "0" until "+" appears).
- Type 55 — Mexico City's area code.
- Type the 8-digit local number from the hotel or business website.
- Tap call.
From a US or Canadian landline
- Dial 011 — US/Canada international exit code.
- Dial 52 — Mexico's country code.
- Dial 55 + the 8-digit local number.
Dialing Examples for Mexico City
| Calling from | Format | Example |
|---|---|---|
| US / Canadian smartphone | +52 55 XXXX XXXX | +52 55 5000 5000 |
| US / Canadian landline | 011 52 55 XXXX XXXX | 011 52 55 5000 5000 |
| Inside Mexico (another city) | 55 XXXX XXXX | 55 5000 5000 |
| UK / Europe | 00 52 55 XXXX XXXX | 00 52 55 5000 5000 |
| WhatsApp (any country) | +52 55 XXXX XXXX | Save as contact first |
What Areas Does Area Code 55 Cover?
Area code 55 covers the 16 alcaldías (boroughs) of Mexico City, which together form one of the world's largest metropolitan areas:
| Zone | Alcaldías included |
|---|---|
| Historic Center / South | Cuauhtémoc, Benito Juárez, Iztapalapa, Xochimilco, Tlalpan |
| West / Business | Miguel Hidalgo, Álvaro Obregón, Cuajimalpa, Magdalena Contreras |
| North | Azcapotzalco, Gustavo A. Madero, Venustiano Carranza |
| East | Iztacalco, Tláhuac, Milpa Alta |
📌 Mexico City vs State of Mexico (EDOMEX)
The State of Mexico (EDOMEX) surrounds Mexico City but is a different entity. Cities like Naucalpan, Ecatepec, and Toluca are NOT in CDMX and have different area codes (722 for Toluca, 55 for parts of the metro area that spill into EDOMEX). If your contact is in the greater metro area but outside CDMX proper, their number may still start with 55.
Mexico City Time Zone
Mexico City runs on Central Time (CST/CDT) — the same time zone as Chicago, Dallas, and most of the US Midwest and South. It observes Daylight Saving Time, though Mexico's DST dates differ slightly from the US:
| Your location | Difference vs Mexico City | Example |
|---|---|---|
| New York / Miami (ET) | Mexico City is 1–2 hours behind | 9 AM ET = 7–8 AM CDMX |
| Chicago / Dallas (CT) | Usually in sync | 9 AM CT ≈ 9 AM CDMX |
| Denver (MT) | Mexico City is 1 hour ahead | 8 AM MT = 9 AM CDMX |
| Los Angeles / Seattle (PT) | Mexico City is 2 hours ahead | 7 AM PT = 9 AM CDMX |
Note: Mexico and the US differ on DST transition dates by 1–2 weeks, which can briefly shift these offsets by an hour in spring and fall.
Does My US Carrier Cover Calls to Mexico City?
- T-Mobile: All plans include unlimited calls to Mexico — dial
+52 55 XXXX XXXXat no extra charge. - AT&T: Unlimited Extra and above include Mexico calling. Verify your plan at att.com.
- Verizon: Not included in standard plans. Add TravelPass ($6/day) when traveling in Mexico to use your existing allowances.
- Google Fi: Mexico is included at US rates on all plans.
- WhatsApp: Most Mexico City businesses, hotels, and contacts are active on WhatsApp. Save as
+52 55 XXXX XXXXand message for free.
Traveling to Mexico City?
Unlimited data in Mexico from $19 USD. Perfect for navigating Mexico City — Google Maps, Uber, restaurant reservations, and WhatsApp calling all covered. Works from the moment you land at AICM or AIFA.
Mexico data from $4.50 USD on Telcel — Mexico City's primary network with near-total metro coverage. Pay by the GB. Great for shorter visits or budget travelers.
Frequently Asked Questions
What is Mexico City's area code?
Mexico City's area code is 55. From the US: +52 55 XXXX XXXX (smartphone) or 011 52 55 XXXX XXXX (landline). Note that Mexico City numbers have 8 local digits — not 7 like most other Mexican cities.
Why does Mexico City use a 2-digit area code?
Mexico City was assigned a 2-digit area code (55) because of the volume of phone lines needed to serve the capital. The same logic applies to Guadalajara (33) and Monterrey (81) — Mexico's three largest metro areas. All other cities use 3-digit area codes.
How many digits is a Mexico City phone number?
10 digits total: 55 (2-digit area code) + XXXX XXXX (8-digit local number). From the US, add +52 in front: +52 55 XXXX XXXX = 12 digits dialed in total.
Is 55 the area code for the State of Mexico (EDOMEX) too?
Parts of the greater metro area that spill into the State of Mexico — such as Naucalpan and Ecatepec — may also use the 55 area code. The 55 code covers the Mexico City metro area broadly, not just the federal entity of CDMX. Toluca (the state capital) has its own area code: 722.
What time zone is Mexico City in?
Mexico City is on Central Time (CST/CDT), the same as Chicago. It observes Daylight Saving Time, though the transition dates are 1–2 weeks different from the US. For most of the year, Mexico City is 2 hours ahead of Los Angeles and 1–2 hours behind New York.
¿No sabes de dónde es un número?
Identifica la LADA y el estado de cualquier número mexicano al instante.
Usar herramienta gratuita →